/*
 * Copyright 2010 - Jeremie Brebec
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.jb.user.server.impl;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.jb.user.client.UserLogin;

import com.google.inject.Inject;
import com.google.inject.Provider;

/**
 * 
 * @author jeremie
 *
 */
public class LoginRequiredChecker implements MethodInterceptor {
    
    @Inject @UserLogin
    private Provider<String> userProvider;
   
    /**
     * 
     */
    public Object invoke(MethodInvocation invocation) throws Throwable {
    	
    	if (userProvider.get() == null)
    		throw new IllegalAccessException("Login required - Method=" + invocation.getMethod().getName() );
    	
    	return invocation.proceed();
    }

}
